Sprint is launching Samsung Galaxy S III (16GB only) in new Amethyst Purple color and also lowered the price of the 16GB version of Galaxy S III to $99.99 with a new line or eligible upgrade and a two-year service agreement, after a $50 mail-in rebate. For a limited time only, new customers who port their phone number from another carrier can get Galaxy S III FREE with an additional $100 instant savings through a port in credit. Here's more info:

As the next generation of the award-winning Samsung Galaxy S lineup, Galaxy S III boasts a 1.5GHz dual-core processor, Android 4.1.2, Jelly Bean, and access to the Sprint 4G LTE network. The refined and simplified user interface brings enhanced usability with S Voice, Motion and facial recognition technology that allows the user to intuitively interact with their device using simple gestures and voice commands. It also offers features that make it easy to share with friends, groups and devices. The sleek and innovative smartphone comes in three colors - Pebble Blue, Marble White and the newly added Amethyst Purple.